Jennifer Lopez's Sheer Birthday Dress Might As Well Have Been Her Birthday Suit (PHOTOS)

No one is going to do the age of 46 quite like Jennifer Lopez. Yes -- it's hard to believe, but J. Lo is 46 years young and seems to get more gorgeous every year. She's stunning and she has to know it because there is no way any woman would wear a dress like this if she wasn't confident in herself and her body. Jennifer's dress was sheer perfection.

J. Lo and boyfriend Casper Smart partied at 1OAK in Southampton, New York, for the celebration. There was cake and dancing and lots of love from Casper. Yes. Jennifer danced in that dress. It was said that there were so many cameras flashing that Casper had to tell people to cool it so Lopez could shake her booty without interruption.

I think once you turn 40, it's fabulous time for the entire decade (and beyond). Nothing frumpy about 40; certainly nothing frumpy about 46 either. This sheer cut-out dress was tight, leaving it no room for any underthings. Daring. Bold. Totally Jennifer. No one can wear a dress quite like J. Lo. She makes me want to take up dancing because ... that body!